4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
6b5e5868e7ebf1aff3a5abd7d0c4ef0e5fbf3648Garrett D'Amore * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik * Copyright 2012 Milan Jurik. All rights reserved.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Copyright (c) 1992, 1993, 1994 Henry Spencer.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Copyright (c) 1992, 1993, 1994
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * The Regents of the University of California. All rights reserved.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * This code is derived from software contributed to Berkeley by
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Henry Spencer.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Redistribution and use in source and binary forms, with or without
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * modification, are permitted provided that the following conditions
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * are met:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * 1. Redistributions of source code must retain the above copyright
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * notice, this list of conditions and the following disclaimer.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * 2. Redistributions in binary form must reproduce the above copyright
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * notice, this list of conditions and the following disclaimer in the
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * documentation and/or other materials provided with the distribution.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * 4. Neither the name of the University nor the names of its contributors
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * may be used to endorse or promote products derived from this software
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * without specific prior written permission.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * SUCH DAMAGE.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * The matching engine and friends. This file is #included by regexec.c
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * after suitable #defines of a variety of macros used herein, so that
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * different state representations can be used without duplicating masses
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * of code.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef SNAMES
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define matcher smatcher
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define fast sfast
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define slow sslow
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define dissect sdissect
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define backref sbackref
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define step sstep
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define print sprint
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define at sat
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define match smat
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef LNAMES
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define matcher lmatcher
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define fast lfast
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define slow lslow
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define dissect ldissect
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define backref lbackref
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define step lstep
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define print lprint
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define at lat
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define match lmat
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef MNAMES
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define matcher mmatcher
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define fast mfast
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define slow mslow
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define dissect mdissect
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define backref mbackref
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define step mstep
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define print mprint
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define at mat
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define match mmat
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/* another structure passed up and down to avoid zillions of parameters */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestruct match {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore struct re_guts *g;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int eflags;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore regmatch_t *pmatch; /* [nsub+1] (0 element unused) */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *offp; /* offsets work from here */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *beginp; /* start of string -- virtual NUL precedes */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *endp; /* end of string -- virtual NUL here */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *coldp; /* can be no match starting before here */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char **lastpos; /* [nplus+1] */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore STATEVARS;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states st; /* current states */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states fresh; /* states for a fresh start */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states tmp; /* temporary */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states empty; /* empty set of states */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore mbstate_t mbs; /* multibyte conversion state */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore};
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/* ========= begin header generated by ./mkh ========= */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef __cplusplus
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amoreextern "C" {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/* === engine.c === */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic int matcher(struct re_guts *, const char *, size_t, regmatch_t[], int);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *dissect(struct match *, const char *, const char *,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno, sopno);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *backref(struct match *, const char *, const char *, sopno,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno, sopno, int);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *fast(struct match *, const char *, const char *, sopno,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *slow(struct match *, const char *, const char *, sopno,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic states step(struct re_guts *, sopno, sopno, states, wint_t, states);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define MAX_RECURSION 100
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define BOL (OUT-1)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define EOL (BOL-1)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define BOLEOL (BOL-2)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define NOTHING (BOL-3)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define BOW (BOL-4)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define EOW (BOL-5)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define BADCHAR (BOL-6)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define NONCHAR(c) ((c) <= OUT)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef REDEBUG
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic void print(struct match *, const char *, states, int, FILE *);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef REDEBUG
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic void at(struct match *, const char *, const char *, const char *,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno, sopno);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef REDEBUG
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *pchar(int ch);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef __cplusplus
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/* ========= end header generated by ./mkh ========= */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef REDEBUG
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define SP(t, s, c) print(m, t, s, c, stdout)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define AT(t, p1, p2, s1, s2) at(m, t, p1, p2, s1, s2)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define NOTE(str) { if (m->eflags&REG_TRACE) printf("=%s\n", (str)); }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#else
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define SP(t, s, c) /* nothing */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define AT(t, p1, p2, s1, s2) /* nothing */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define NOTE(s) /* nothing */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * matcher - the actual matching engine
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic int /* 0 success, REG_NOMATCH failure */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorematcher(struct re_guts *g,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *string,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore size_t nmatch,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore regmatch_t pmatch[],
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int eflags)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *endp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore struct match mv;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore struct match *m = &mv;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *dp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const sopno gf = g->firststate+1; /* +1 for OEND */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const sopno gl = g->laststate;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *start;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *stop;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* Boyer-Moore algorithms variables */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *pp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int cj, mj;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *mustfirst;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *mustlast;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int *matchjump;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int *charjump;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* simplify the situation where possible */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (g->cflags&REG_NOSUB)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore nmatch = 0;
84441f85b19f6b8080883f30109e58e43c893709Garrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (eflags&REG_STARTEND) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore start = string + pmatch[0].rm_so;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stop = string + pmatch[0].rm_eo;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore } else {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore start = string;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stop = start + strlen(start);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
84441f85b19f6b8080883f30109e58e43c893709Garrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (stop < start)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (REG_EFATAL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* prescreening; this does wonders for this rather slow code */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (g->must != NULL) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (g->charjump != NULL && g->matchjump != NULL) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore mustfirst = g->must;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore mustlast = g->must + g->mlen - 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore charjump = g->charjump;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore matchjump = g->matchjump;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore pp = mustlast;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (dp = start+g->mlen-1; dp < stop; ) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* Fast skip non-matches */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore while (dp < stop && charjump[(int)*dp])
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp += charjump[(int)*dp];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp >= stop)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* Greedy matcher */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * We depend on not being used for
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * for strings of length 1
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore while (*--dp == *--pp && pp != mustfirst)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (*dp == *pp)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* Jump to next possible match */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore mj = matchjump[pp - mustfirst];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore cj = charjump[(int)*dp];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp += (cj < mj ? mj : cj);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore pp = mustlast;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (pp != mustfirst)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (REG_NOMATCH);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore } else {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (dp = start; dp < stop; dp++)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (*dp == g->must[0] &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stop - dp >= g->mlen &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore memcmp(dp, g->must, (size_t)g->mlen) == 0)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp == stop) /* we didn't find g->must */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (REG_NOMATCH);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* match struct setup */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->g = g;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->eflags = eflags;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch = NULL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->lastpos = NULL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->offp = string;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->beginp = start;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->endp = stop;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore STATESETUP(m, 4);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SETUP(m->st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SETUP(m->fresh);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SETUP(m->tmp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SETUP(m->empty);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore CLEAR(m->empty);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ZAPSTATE(&m->mbs);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* Adjust start according to moffset, to speed things up */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (g->moffset > -1)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore start = ((dp - g->moffset) < start) ? start : dp - g->moffset;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("mloop", m->st, *start);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* this loop does only one repetition except for backrefs */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore endp = fast(m, start, stop, gf, gl);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (endp == NULL) { /* a miss */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (m->pmatch != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore free((char *)m->pmatch);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (m->lastpos != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore free((char *)m->lastpos);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore STATETEARDOWN(m);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (REG_NOMATCH);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (nmatch == 0 && !g->backrefs)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* no further info needed */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* where? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(m->coldp != NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore NOTE("finding start");
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore endp = slow(m, m->coldp, stop, gf, gl);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (endp != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(m->coldp < m->endp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->coldp += XMBRTOWC(NULL, m->coldp,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->endp - m->coldp, &m->mbs, 0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (nmatch == 1 && !g->backrefs)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* no further info needed */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* oh my, he wants the subexpressions... */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (m->pmatch == NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch = (regmatch_t *)malloc((m->g->nsub + 1) *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sizeof (regmatch_t));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (m->pmatch == NULL) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore STATETEARDOWN(m);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (REG_ESPACE);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (i = 1; i <= m->g->nsub; i++)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch[i].rm_so = m->pmatch[i].rm_eo = -1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* NB: FreeBSD has REG_BACKR, we do not */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (!g->backrefs /* && !(m->eflags&REG_BACKR) */) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore NOTE("dissecting");
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = dissect(m, m->coldp, endp, gf, gl);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore } else {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (g->nplus > 0 && m->lastpos == NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->lastpos = malloc((g->nplus+1) *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sizeof (const char *));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (g->nplus > 0 && m->lastpos == NULL) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore free(m->pmatch);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore STATETEARDOWN(m);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (REG_ESPACE);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore NOTE("backref dissect");
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = backref(m, m->coldp, endp, gf, gl, (sopno)0, 0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* uh-oh... we couldn't find a subexpression-level match */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(g->backrefs); /* must be back references doing it */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(g->nplus == 0 || m->lastpos != NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp != NULL || endp <= m->coldp)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* defeat */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore NOTE("backoff");
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore endp = slow(m, m->coldp, endp-1, gf, gl);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (endp == NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* defeat */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* try it on a shorter possibility */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifndef NDEBUG
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (i = 1; i <= m->g->nsub; i++) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(m->pmatch[i].rm_so == -1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(m->pmatch[i].rm_eo == -1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore NOTE("backoff dissect");
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = backref(m, m->coldp, endp, gf, gl, (sopno)0, 0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(dp == NULL || dp == endp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp != NULL) /* found a shorter one */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* despite initial appearances, there is no match here */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore NOTE("false alarm");
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* recycle starting later */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore start = m->coldp + XMBRTOWC(NULL, m->coldp,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stop - m->coldp, &m->mbs, 0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(start <= stop);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* fill in the details if requested */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (nmatch > 0) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore pmatch[0].rm_so = m->coldp - m->offp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore pmatch[0].rm_eo = endp - m->offp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (nmatch > 1) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(m->pmatch != NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (i = 1; i < nmatch; i++)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (i <= m->g->nsub)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore pmatch[i] = m->pmatch[i];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore else {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore pmatch[i].rm_so = -1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore pmatch[i].rm_eo = -1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (m->pmatch != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore free((char *)m->pmatch);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (m->lastpos != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore free((char *)m->lastpos);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore STATETEARDOWN(m);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * dissect - figure out what matched what, no back references
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amoredissect(struct match *m, const char *start, const char *stop, sopno startst,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno stopst)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno ss; /* start sop of current subRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno es; /* end sop of current subRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *sp; /* start of string matched by it */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *stp; /* string matched by it cannot pass here */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *rest; /* start of rest of string */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *tail; /* string unmatched by rest of RE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno ssub; /* start sop of subsubRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno esub; /* end sop of subsubRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *ssp; /* start of string matched by subsubRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *sep; /* end of string matched by subsubRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *oldssp; /* previous ssp */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *dp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore AT("diss", start, stop, startst, stopst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp = start;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (ss = startst; ss < stopst; ss = es) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* identify end of subRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore es = ss;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore switch (OP(m->g->strip[es])) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OPLUS_:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OQUEST_:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore es += OPND(m->g->strip[es]);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OCH_:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore while (OP(m->g->strip[es]) != O_CH)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore es += OPND(m->g->strip[es]);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore es++;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* figure out what it matched */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore switch (OP(m->g->strip[ss])) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OEND:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OCHAR:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp += XMBRTOWC(NULL, sp, stop - start, &m->mbs, 0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBOL:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OEOL:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBOW:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OEOW:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OANY:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OANYOF:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp += XMBRTOWC(NULL, sp, stop - start, &m->mbs, 0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBACK_:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_BACK:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* cases where length of match is hard to find */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OQUEST_:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stp = stop;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* how long could this one be? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore rest = slow(m, sp, stp, ss, es);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(rest != NULL); /* it did match */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* could the rest match the rest? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore tail = slow(m, rest, stop, es, stopst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (tail == stop)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* yes! */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* no -- try a shorter match for this one */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stp = rest - 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(stp >= sp); /* it did work */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssub = ss + 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub = es - 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* did innards match? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (slow(m, sp, rest, ssub, esub) != NULL) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = dissect(m, sp, rest, ssub, esub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(dp == rest);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#if defined(__lint)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) dp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore } else /* no */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(sp == rest);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp = rest;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OPLUS_:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stp = stop;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* how long could this one be? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore rest = slow(m, sp, stp, ss, es);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(rest != NULL); /* it did match */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* could the rest match the rest? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore tail = slow(m, rest, stop, es, stopst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (tail == stop)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* yes! */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* no -- try a shorter match for this one */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stp = rest - 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(stp >= sp); /* it did work */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssub = ss + 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub = es - 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssp = sp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore oldssp = ssp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) { /* find last match of innards */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sep = slow(m, ssp, rest, ssub, esub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (sep == NULL || sep == ssp)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* failed or matched null */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore oldssp = ssp; /* on to next try */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssp = sep;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (sep == NULL) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* last successful match */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sep = ssp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssp = oldssp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(sep == rest); /* must exhaust substring */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(slow(m, ssp, sep, ssub, esub) == rest);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = dissect(m, ssp, sep, ssub, esub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(dp == sep);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp = rest;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OCH_:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stp = stop;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* how long could this one be? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore rest = slow(m, sp, stp, ss, es);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(rest != NULL); /* it did match */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* could the rest match the rest? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore tail = slow(m, rest, stop, es, stopst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (tail == stop)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* yes! */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* no -- try a shorter match for this one */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore stp = rest - 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(stp >= sp); /* it did work */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssub = ss + 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub = ss + OPND(m->g->strip[ss]) - 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(m->g->strip[esub]) == OOR1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) { /* find first matching branch */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (slow(m, sp, rest, ssub, esub) == rest)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* it matched all of it */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* that one missed, try next one */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(m->g->strip[esub]) == OOR1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub++;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(m->g->strip[esub]) == OOR2);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssub = esub + 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub += OPND(m->g->strip[esub]);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (OP(m->g->strip[esub]) == OOR2)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub--;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore else
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(m->g->strip[esub]) == O_CH);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = dissect(m, sp, rest, ssub, esub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(dp == rest);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp = rest;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_PLUS:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_QUEST:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OOR1:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OOR2:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_CH:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OLPAREN:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = OPND(m->g->strip[ss]);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0 < i && i <= m->g->nsub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch[i].rm_so = sp - m->offp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case ORPAREN:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = OPND(m->g->strip[ss]);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0 < i && i <= m->g->nsub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch[i].rm_eo = sp - m->offp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore default: /* uh oh */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(sp == stop);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (sp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * backref - figure out what matched what, figuring in back references
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorebackref(struct match *m, const char *start, const char *stop, sopno startst,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno stopst, sopno lev, /* PLUS nesting level */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int rec)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno ss; /* start sop of current subRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *sp; /* start of string matched by it */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno ssub; /* start sop of subsubRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno esub; /* end sop of subsubRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *ssp; /* start of string matched by subsubRE */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *dp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore size_t len;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int hard;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sop s;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore regoff_t offsave;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore cset *cs;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore wint_t wc;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore AT("back", start, stop, startst, stopst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp = start;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* get as far as we can with easy stuff */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore hard = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (ss = startst; !hard && ss < stopst; ss++)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore switch (OP(s = m->g->strip[ss])) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OCHAR:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (sp == stop)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp += XMBRTOWC(&wc, sp, stop - sp, &m->mbs, BADCHAR);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (wc != OPND(s))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OANY:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (sp == stop)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp += XMBRTOWC(&wc, sp, stop - sp, &m->mbs, BADCHAR);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (wc == BADCHAR)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OANYOF:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (sp == stop)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore cs = &m->g->sets[OPND(s)];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sp += XMBRTOWC(&wc, sp, stop - sp, &m->mbs, BADCHAR);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (wc == BADCHAR || !CHIN(cs, wc))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBOL:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((sp == m->beginp && !(m->eflags&REG_NOTBOL)) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (sp < m->endp && *(sp-1) == '\n' &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (m->g->cflags&REG_NEWLINE))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OEOL:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((sp == m->endp && !(m->eflags&REG_NOTEOL)) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (sp < m->endp && *sp == '\n' &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (m->g->cflags&REG_NEWLINE))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBOW:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (((sp == m->beginp && !(m->eflags&REG_NOTBOL)) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (sp < m->endp && *(sp-1) == '\n' &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (m->g->cflags&REG_NEWLINE)) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (sp > m->beginp && !ISWORD(*(sp-1)))) &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (sp < m->endp && ISWORD(*sp))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik }
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OEOW:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (((sp == m->endp && !(m->eflags&REG_NOTEOL)) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (sp < m->endp && *sp == '\n' &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (m->g->cflags&REG_NEWLINE)) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (sp < m->endp && !ISWORD(*sp))) &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (sp > m->beginp && ISWORD(*(sp-1)))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik }
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_QUEST:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OOR1: /* matches null but needs to skip */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ss++;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore s = m->g->strip[ss];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore do {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(s) == OOR2);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ss += OPND(s);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore } while (OP(s = m->g->strip[ss]) != O_CH);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* note that the ss++ gets us past the O_CH */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore default: /* have to make a choice */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore hard = 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (!hard) { /* that was it! */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (sp != stop)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (sp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ss--; /* adjust for the for's final increment */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* the hard stuff */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore AT("hard", sp, stop, ss, stopst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore s = m->g->strip[ss];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore switch (OP(s)) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBACK_: /* the vilest depths */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = OPND(s);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0 < i && i <= m->g->nsub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (m->pmatch[i].rm_eo == -1)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(m->pmatch[i].rm_so != -1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore len = m->pmatch[i].rm_eo - m->pmatch[i].rm_so;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (len == 0 && rec++ > MAX_RECURSION)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(stop - m->beginp >= len);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (sp > stop - len)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL); /* not enough left to match */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssp = m->offp + m->pmatch[i].rm_so;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (memcmp(sp, ssp, len) != 0)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore while (m->g->strip[ss] != SOP(O_BACK, i))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ss++;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (backref(m, sp+len, stop, ss+1, stopst, lev, rec));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OQUEST_: /* to null or not */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = backref(m, sp, stop, ss+1, stopst, lev, rec);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (dp); /* not */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (backref(m, sp, stop, ss+OPND(s)+1, stopst, lev, rec));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OPLUS_:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(m->lastpos != NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(lev+1 <= m->g->nplus);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->lastpos[lev+1] = sp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (backref(m, sp, stop, ss+1, stopst, lev+1, rec));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_PLUS:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (sp == m->lastpos[lev]) /* last pass matched null */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (backref(m, sp, stop, ss+1, stopst, lev-1, rec));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* try another pass */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->lastpos[lev] = sp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = backref(m, sp, stop, ss-OPND(s)+1, stopst, lev, rec);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp == NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (backref(m, sp, stop, ss+1, stopst, lev-1, rec));
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik return (dp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OCH_: /* find the right one, if any */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssub = ss + 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub = ss + OPND(s) - 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(m->g->strip[esub]) == OOR1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) { /* find first matching branch */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = backref(m, sp, stop, ssub, esub, lev, rec);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (dp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* that one missed, try next one */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (OP(m->g->strip[esub]) == O_CH)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL); /* there is none */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub++;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(m->g->strip[esub]) == OOR2);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ssub = esub + 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub += OPND(m->g->strip[esub]);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (OP(m->g->strip[esub]) == OOR2)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore esub--;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore else
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(m->g->strip[esub]) == O_CH);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
33f5ff17089e3a43e6e730bf80384c233123dbd9Milan Jurik /* NOTREACHED */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OLPAREN: /* must undo assignment if rest fails */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = OPND(s);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0 < i && i <= m->g->nsub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore offsave = m->pmatch[i].rm_so;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch[i].rm_so = sp - m->offp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = backref(m, sp, stop, ss+1, stopst, lev, rec);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (dp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch[i].rm_so = offsave;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case ORPAREN: /* must undo assignment if rest fails */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = OPND(s);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0 < i && i <= m->g->nsub);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore offsave = m->pmatch[i].rm_eo;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch[i].rm_eo = sp - m->offp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore dp = backref(m, sp, stop, ss+1, stopst, lev, rec);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (dp != NULL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (dp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->pmatch[i].rm_eo = offsave;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore default: /* uh oh */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* "can't happen" */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * fast - step through the string at top speed
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorefast(struct match *m, const char *start, const char *stop, sopno startst,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno stopst)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states st = m->st;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states fresh = m->fresh;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states tmp = m->tmp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *p = start;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore wint_t c;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore wint_t lastc; /* previous c */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore wint_t flagch;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *coldp; /* last p after which no match was underway */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore size_t clen;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore CLEAR(st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SET1(st, startst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("fast", st, *p);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore st = step(m->g, startst, stopst, st, NOTHING, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ASSIGN(fresh, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("start", st, *p);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore coldp = NULL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (start == m->beginp)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore c = OUT;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore else {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * XXX Wrong if the previous character was multi-byte.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Newline never is (in encodings supported by FreeBSD),
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * so this only breaks the ISWORD tests below.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore c = (uch)*(start - 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* next character */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore lastc = c;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (p == m->endp) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore clen = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore c = OUT;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore } else
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore clen = XMBRTOWC(&c, p, m->endp - p, &m->mbs, BADCHAR);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (EQ(st, fresh))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore coldp = p;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* is there an EOL and/or BOL between lastc and c? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = '\0';
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((lastc == '\n' && m->g->cflags&REG_NEWLINE) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (lastc == OUT && !(m->eflags&REG_NOTBOL))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = BOL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = m->g->nbol;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((c == '\n' && m->g->cflags&REG_NEWLINE) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (c == OUT && !(m->eflags&REG_NOTEOL))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = (flagch == BOL) ? BOLEOL : EOL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i += m->g->neol;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (i != 0) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (; i > 0; i--)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore st = step(m->g, startst, stopst, st,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("boleol", st, c);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* how about a word boundary? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((flagch == BOL || (lastc != OUT && !ISWORD(lastc))) &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (c != OUT && ISWORD(c))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = BOW;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((lastc != OUT && ISWORD(lastc)) &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (flagch == EOL || (c != OUT && !ISWORD(c)))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = EOW;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (flagch == BOW || flagch == EOW) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore st = step(m->g, startst, stopst, st, flagch, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("boweow", st, c);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* are we done? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ISSET(st, stopst) || p == stop || clen > stop - p)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* NOTE BREAK OUT */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* no, we must deal with this character */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ASSIGN(tmp, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ASSIGN(st, fresh);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(c != OUT);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore st = step(m->g, startst, stopst, tmp, c, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("aft", st, c);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(EQ(step(m->g, startst, stopst, st, NOTHING, st), st));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore p += clen;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(coldp != NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore m->coldp = coldp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ISSET(st, stopst))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (p+XMBRTOWC(NULL, p, stop - p, &m->mbs, 0));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore else
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (NULL);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * slow - step through the string more deliberately
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amoreslow(struct match *m, const char *start, const char *stop, sopno startst,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno stopst)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states st = m->st;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states empty = m->empty;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states tmp = m->tmp;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *p = start;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore wint_t c;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore wint_t lastc; /* previous c */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore wint_t flagch;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore const char *matchp; /* last p at which a match ended */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore size_t clen;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore AT("slow", start, stop, startst, stopst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore CLEAR(st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SET1(st, startst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("sstart", st, *p);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore st = step(m->g, startst, stopst, st, NOTHING, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore matchp = NULL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (start == m->beginp)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore c = OUT;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore else {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * XXX Wrong if the previous character was multi-byte.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Newline never is (in encodings supported by FreeBSD),
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * so this only breaks the ISWORD tests below.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore c = (uch)*(start - 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (;;) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* next character */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore lastc = c;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (p == m->endp) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore c = OUT;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore clen = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore } else
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore clen = XMBRTOWC(&c, p, m->endp - p, &m->mbs, BADCHAR);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* is there an EOL and/or BOL between lastc and c? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = '\0';
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((lastc == '\n' && m->g->cflags&REG_NEWLINE) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (lastc == OUT && !(m->eflags&REG_NOTBOL))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = BOL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = m->g->nbol;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((c == '\n' && m->g->cflags&REG_NEWLINE) ||
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (c == OUT && !(m->eflags&REG_NOTEOL))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = (flagch == BOL) ? BOLEOL : EOL;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i += m->g->neol;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (i != 0) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (; i > 0; i--)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore st = step(m->g, startst, stopst, st,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("sboleol", st, c);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* how about a word boundary? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((flagch == BOL || (lastc != OUT && !ISWORD(lastc))) &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (c != OUT && ISWORD(c))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = BOW;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if ((lastc != OUT && ISWORD(lastc)) &&
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (flagch == EOL || (c != OUT && !ISWORD(c)))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore flagch = EOW;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (flagch == BOW || flagch == EOW) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore st = step(m->g, startst, stopst, st, flagch, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("sboweow", st, c);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* are we done? */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ISSET(st, stopst))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore matchp = p;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (EQ(st, empty) || p == stop || clen > stop - p)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break; /* NOTE BREAK OUT */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* no, we must deal with this character */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ASSIGN(tmp, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore ASSIGN(st, empty);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(c != OUT);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore st = step(m->g, startst, stopst, tmp, c, st);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore SP("saft", st, c);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(EQ(step(m->g, startst, stopst, st, NOTHING, st), st));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore p += clen;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (matchp);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * step - map set of states reachable before char to set reachable after
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic states
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestep(struct re_guts *g,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno start, /* start state within strip */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno stop, /* state after stop state within strip */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states bef, /* states reachable before */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore wint_t ch, /* character or NONCHAR code */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore states aft) /* states already known reachable after */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore cset *cs;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sop s;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno pc;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore onestate here; /* note, macros know this name */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno look;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (pc = start, INIT(here, pc); pc != stop; pc++, INC(here)) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore s = g->strip[pc];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore switch (OP(s)) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OEND:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(pc == stop-1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OCHAR:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* only characters can match */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(!NONCHAR(ch) || ch != OPND(s));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ch == OPND(s))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, bef, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBOL:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ch == BOL || ch == BOLEOL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, bef, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OEOL:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ch == EOL || ch == BOLEOL)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, bef, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBOW:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ch == BOW)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, bef, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OEOW:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ch == EOW)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, bef, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OANY:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (!NONCHAR(ch))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, bef, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OANYOF:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore cs = &g->sets[OPND(s)];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (!NONCHAR(ch) && CHIN(cs, ch))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, bef, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OBACK_: /* ignored here */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_BACK:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OPLUS_: /* forward, this is just an empty */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_PLUS: /* both forward and back */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore i = ISSETBACK(aft, OPND(s));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore BACK(aft, aft, OPND(s));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (!i && ISSETBACK(aft, OPND(s))) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore /* oho, must reconsider loop body */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore pc -= OPND(s) + 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore INIT(here, pc);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OQUEST_: /* two branches, both forward */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, OPND(s));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_QUEST: /* just an empty */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OLPAREN: /* not significant here */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case ORPAREN:
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OCH_: /* mark the first two branches */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(g->strip[pc+OPND(s)]) == OOR2);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, OPND(s));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OOR1: /* done a branch, find the O_CH */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ISSTATEIN(aft, here)) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (look = 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore OP(s = g->strip[pc+look]) != O_CH;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore look += OPND(s))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(s) == OOR2);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, look + 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case OOR2: /* propagate OCH_'s marking */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (OP(g->strip[pc+OPND(s)]) != O_CH) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(OP(g->strip[pc+OPND(s)]) == OOR2);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, OPND(s));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore case O_CH: /* just empty */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore FWD(aft, aft, 1);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore default: /* ooooops... */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore assert(0);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore break;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (aft);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifdef REDEBUG
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * print - print a set of states
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic void
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amoreprint(struct match *m, const char *caption, states st, int ch, FILE *d)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore struct re_guts *g = m->g;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int i;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore int first = 1;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (!(m->eflags&REG_TRACE))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) fprintf(d, "%s", caption);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ch != '\0')
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) fprintf(d, " %s", pchar(ch));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore for (i = 0; i < g->nstates; i++)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (ISSET(st, i)) {
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) fprintf(d, "%s%d", (first) ? "\t" : ", ", i);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore first = 0;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore }
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) fprintf(d, "\n");
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * at - print current situation
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic void
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amoreat(struct match *m, const char *title, const char *start, const char *stop,
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore sopno startst, sopno stopst)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (!(m->eflags&REG_TRACE))
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return;
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) printf("%s %s-", title, pchar(*start));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) printf("%s ", pchar(*stop));
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) printf("%ld-%ld\n", (long)startst, (long)stopst);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#ifndef PCHARDONE
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#define PCHARDONE /* never again */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore/*
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * pchar - make a character printable
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * Is this identical to regchar() over in debug.c? Well, yes. But a
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * duplicate here avoids having a debugging-capable regexec.o tied to
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * a matching debug.o, and this is convenient. It all disappears in
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore * the non-debug compilation anyway, so it doesn't matter much.
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore */
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorestatic const char *
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amorepchar(int ch)
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore{
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore static char pbuf[10];
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore if (isprint((uch)ch) || ch == ' ')
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) sprintf(pbuf, "%c", ch);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore else
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore (void) sprintf(pbuf, "\\%o", ch);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore return (pbuf);
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore}
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#endif
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef matcher
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef fast
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef slow
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef dissect
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef backref
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef step
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef print
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef at
4297a3b0d0a35d80f86fff155e288e885a100e6dGarrett D'Amore#undef match